GM factor 1-2
Five major types of humoral antibodies - IgG, IgA, IgM, IgD, IgE. 75%. 15%. 9%. 1% and 0.001%
B lymphocytes release antibodies.
Immunoglobulins are are produced by white blood cells.
Gm factor is variant of IgG Antibody. It is the only antibody which crosses the placenta and is secreted sometimes in milk.
Genetic marker for studying leukaemia.
Europe GM - 1, 17, 21
Mongoloids - 3,5,13,14
Negroids - 1,13,17